Saw chip collector



y 1956 P. TOLLISON ET AL 2,743,501

SAW CHIP COLLECTOR Filed Jan. 22, 1953 3 Sheets-Sheet l INVENTORS 3 PAUL 4. TOLL/SON 57 01042155 L/FVCHRDS 54 BY ATTORN 5 May 1, 1956 P. L. TOLLISON ET AL 2,743,501

' SAW CHIP COLLECTOR Filed Jan. 22, 1953 3 Sheets-Sheet 2 INVENTORS P1904 L. TOZZ/JO/V Cg/YHRZZ'IS LJP/C/WYOJ Wm WM Z ATTORNEYS y 1, 1956 P. L. TOLLISON ET AL 2,743,501

SAW CHIP COLLECTOR 2M; mwr/hz 5M 92% ATTO EYS Paul L. Tollison, North Plainfield, and Charles L. Ricards, -South'Plainfield, .N'. J., assiguors toWood Newspaper Machinery Corporation, Plainfield, N. .L, a corporation of Virginia v I Application January 22, 1953, Serial No. 332,676 Claims. (CI. 29-21) iThis invention relates to an improved saw chip collector and more particularly concerns an improved saw mounting and chip collector mechanism for use in removing the riser or tail from and trimming thelower edge of a cast stereotype plateasit is rotated about a core about which it has been cast. v i

In one known form of stereotype plate making machine, substantially semi-cylindrical plates are successively cast'in a mold space defined bya concave semi-cylindrical casting box and the opposite halves of a cylindrical core mounted to'turn about its axis which is customarily vertically' disposed. After each plate is cast, the casting box is retractedand thecore is turned about its axisthrough a half revolution to remove the cast plate from the casting box. Thereafter, thecastingbox is again moved into close proximity with'the newly presented half of the core todefine the mold space, andflanother plate is cast.

In order to insure the proper density of the metal forming the cast plate, the metal is castto a considerably greater depth axially of the core'than is required, and

a so-called riser or tail extends for some distance above th'euseful portion of the plate on which the type is cast. Itis necess ary. t9 removethisriser from the plateand to trim; the lower'edg'e of the plate before the plate is subjected to'further finishing operations. This is customarilyfaccomplished by moving rotating sawsinto close proximitywith the coreto sever theplate along thetop andbottorn curved edges of its useful portion as'the core is turned, wherebythe'plate is fed to the saws and trimmed as the 'core turns the plate out of the casting box. During this operation, the saws produce a quantity of hot metal chips and dust which are driven outwardly tangentially of the saws at high velocity. In previously known constructions, this saw debris not only constitutes a hazard to operating personnel, but the flying chips and du'stjclog associated mechanism and frequently ricochet from adjacent objects and strike and adhere to the type bearing surface of, the stereotype plates, producingunde- United States Patent 0 sirable spots and imperfections in the type'which appear as black spots on the printed sheets subsequently produced bythe plates. I

According to this invention, a saw chip collector is provided for removable mounting on the saw supporting mechanism or hanger. The chip collector has a chipintercepting section'whichQwhen the saws are in opera- ,tive cutting position, lies in the paths of the chips being thrown tangentially from the saws to intercept them. The chip-interceptin'g-section of the chip collector leads with a gradually decreasing radius of curvature into a substantially cylindrical chamber of the collector where the chips brought into the collector will move in a circular path'until their velocity has diminished to such an extent 'thatthey fall downwardly in the chamber. bottom end of the chamber is open and a hopper is placed under this open end to catch the falling chips. Hence all of the saw chips ordebris thrown by the saws in cutting and trimming a stereotype printing plate on the core of the casting machine are collected, deactivated anddeposited in a collection'hopper.

- previously indicated,

The

he saws are mounted for movement into and out of engagement with stereotype" plates as cast on the core of a casting machine. Hence alsois the chip collector, and the invention therefore contion;"

Fig. 4 is a sectional plan view similar to that of Fig. 3

but showing the saw. attachmentand chip collector in. inoperative position. This sectionis taken on line 4-4 2,743,501 igatented. May 1, 1956 ICC templates the provision of a lector opposite each saw to permit greater adjustment of this section of the collector relative to the core than may be alforded by its-mounting on the saw hanger. guide is also provided for connection with the cylindrical chamber portion of the collector in order to confine the movement thereof to a substantially straight line path' These and other novel features of the invention will be better understood by reference to the following more detailed description of one embodiment of the invention in connection withthe illustration thereof in the accompanying drawings, inwhich:

Fig. 1 is an elevation of a part of. a stereotype plate casting machine associated withwhich is a sawing appaq ratus and chip, collector; p I

Fg. 2 is a plan view of the apparatus of Fig. 1;

Fig 3 is an enlarged sectional plan-view of the chip 7 collector and thesaw attachment bothin operative posiand chip collector taken on line 5-5 of Fig. 4;

chip guard extension adjustably mounted on the chip-intercepting section of the col- 1 Fig. 6 is a fragmentary's'ection in elevation of the adjusting means for varying the' limits of movement of the sawhanger and is taken magmas-'6 of Fig. 4; and

'Fig. 7 is a section taken alon'g line7 .7 of Fig. 6. Referring toFigs. 1 and 2 of the drawings, there is illustrated'ap'ortion of a stereotype plate casting machine including a'franie ihdicated'generally at 10 in which is" mounted a core lljadapted to be rotated about its ver- "tical axis for the casting of stereotype printing plates 12,

one'of which'is'shown thereon. 'To'remove the plate 12"" from the core, the latter is rotated in the direction of the"- ar-row in Fig. 2. "The plate as cast includes a riser 13 i at its upper end which must be removed. Theplate also must be trimmed along itslower edge. The removal of the riser and the trimming of the lower edge of the plate is effected during the' aforementioned rotation of I the core 11 by a pair of saws 14 and 15 which, as illus- 1 trated in'Figs. l, 2 and 3, areabout to complete such an operation.

The saws 14 and 15 which are of a type that cutbeveled edges are mounted on a vertical drive shaft 16 riding in bearings 17 andlfi in the housing 19 of a saw hanger. The saw hanger is pivotally mounted on a main supporting shaft 20 by brackets 21 and 22 secured-to the housing 19 and is adapted to be-pivoted thereabout.

A driving gear 25 is freely mounted on shaft 20 and meshes with a pinion 26 mounted on vertical drive shaft 16 for the saws 14 and 15. The saw hanger housing '19 in which drive shaft '16 is mounted is, as indicated:

adapted to pivot about main support shaft 20 and hence I so also is drive shaft 16, the pinion 26 remaining in engagement with gear 25 during such pivotal movement.-

Gear 25 is operatively connected to'the drive motor (not shown) of the casting machine'through a gear 27 (Figs.

1 and 2 The saw hanger and the saws Hand 15 are; moved toward; and awayfrom the core 11 of the casting machine by a rod' 29 (Figs. 3, 4 and 5) which is connected to one end of a bracket30 by a pin 31, the bracket 30 3. being mounted on shaft 20. The other end oi the bracket 30 is connected to the saw hanger through adjustment means indicated generally at. 52 which will be hereinafter described. Hence movement of. rod.29 islimparted to the saw. hanger. and. efiects the. latters pivotal. movement. about, shaft: 20' toward and. away,- fromcore L1. The; operating rod; 29 may. be; connected through. cam; means. not shown. to; the operating .meclianism1 for: the: casting; machine, the: latter also not. being shQW so that! the: movement of the saw'hanger is correlated. with the movement of the core. of the casting; apparatus in.

order; that the saws may bemoved: toward the: core. to cut; and trim a. stereotype printing plate: as it: is; being. moved to discharge. position. by the core: of the casting machine.

The adjusting means 32 includes the bracket 30 men-- tioned above to-oneend' of-whichisconnected the operating rod 29. Referring particularly to Figs. 3, 4, 6. and-7', the other end of the bracket 30 is provided with a recess 33in theend walls of which aremounted adjusting screws 34 which may be threaded so as to" extend a. greater orshorter distance into the recess 33. Arcuate slots- 36, 37 are provided in member 30 and lie above and below recess. 33'. An adjfusting pin 38 extends throughthe slots 36, 37" and recess 33 and'has an upper portion 39 extending through a circular bore hole 40: in one end of a bracket 41 which also is pivotally mounted on shaft 20. Nuts 42 maintain pin 39 in place. Theother end of bracket 41 is' fi'xedly secured to the sawhanger and henceupon pivotal movement of bracket 30 about shaft 20 by rod- 29, the saw hanger is pivoted thereabout by reason of the pin connection between brackets 30' and 41-. A slot 41' in said other end" of bracket 41 permits free. move.- ment of pin 31.

To etfect a change in the. limits of'pivotal movement of the saw hanger about theshaft 20, the limits of pivotal movement of the bracket 30' by rod 29 being constant, adjustment screws 34 are adjusted to position pin 38in. a. different position in. the arcuate slots 36, 37 of bracket 30.; Hence the limit of movement of the sawstoward core 11. may be adjusted. to. accommodate a wearing, of

a complementary arcuate section 53, of the. saw hanger.v

housing. This overlappingof: a sectionof. the. chip. C011" lector with. a section of the saw hanger housing. prevents: the escape; of saw chips between; the two. The chip, C011 lector also has a front wall. 53- whichforms an extension. oh a portion of the cylindrical chamber 50 and extends with an increasing radius of curvature outwardly therefrom to a. terminal section of substantially infinite radius. As maybe seen in Fig. 3, this terminal section of the saw chip collector is. adapted when the saws are in contact with and cutting a stereotype printing: plate to lie in: the path of travel of chips being thrown by the saw in a direction; tangentially of the section. of the saw in contact with the plate.

The. curvature of. portion 53 and of the chamber 50' of? the. chip collector gradually changes the. direction;v of travel of the chips from. a. straight line. to, a circular path,. at. the. same time decreasing the speed thereof by frictional contact. The chips continue to rotate in the cylindrical. chamber 50 until. their velocity is such that. they fall downwardly: therein. A hopper Sttplaced. below the saw chip. collector receives the falling: chips and stores. them for removal.

The outer end or? the section 53v of the saw chip collector is provided with a pair of chip. guard extensions, only the upper'one 5501: which is shown in Figs. 3 and 4, it being located horizontally opposite upper saw. 15. A

similar chip guard extension, however, is provided on the lower portion of section 53 of the chipcollector opposite the lower saw 14. These chip guard extensions are secured to section 53 of, the chip collector by bolts 56 passing through slots 57 therein. Hence they may be adjusted outwardly'or'inwardly on section-53 of the collector. if desired The;saw=chip. collector: is provided with upperandllowcr outrigger: brackets 60 and 61 respectively (Fig; 5). The outer ends of these brackets are provided withbores adapted. to; receiver studs. 62 and: 63,. respectinely the studs being mounted in. the saw hanger housing 19 whereby the chip collector may be pivotally and readily removably mounted on the saw hanger. For removal, the chip collectorismerely lifted in the direction ofthe arrows at sothat the brackets 60. and 61 become disengaged with the studs 62 and 63;

A third outrigger bracket 65" extends from the cylindrical chamber end of the chip collector outwardly therefrom and carries at its distal end a guide pin 66. The guide pin is adapted to be received in a slot 67 of a guide 68 which is fixed to a stationary portion of the frame It]: It will be, noted that guideslot 67'is.canted slightly to fulfill its purpose of confining the centcrQf the cylindrical chamber. 50" of the chip collector to. a straight line path.

Various changes and modifications may of course be. made in the. particular apparatus above. described and illustrated. in the accompanying drawings, without depart: ing from the invention and the scope of the invention should therefore be limited. only to the extent set forth. in the appended. claims.

We. claim;

1.. A saw chip collector comprising a: substantiallycylindrical hollow body portion, a. curved lead-in. portion. extending from saidbody p'ortionwith a gradually increasring, radius. of} curvature. and terminating, in. a section of, substantially. intiniteradius. and. means for. moun ing saidchipwollectoron asterfiQ yge. platetrimming saw housing with. its terminal section positioned to intercept. in. a sub. stantially tangential direction any. chips thrown by: a. saw in thesaw. housing when the, collector is mounted on. the, saw housing, and.v the saw. is. in cuttingengagement with a. stereotypeplate.

2. A saw chip collector according to claim 1 whichincludes a chip. guard extension adjustably mounted. on. said terminal. SQCfiOm.

3.. A. sawchip collector; according to claim. L which. includes means. for nemovably mounting; said collector on the. stereotype. platetrimming saw. housing.

4. A saw-chip. collector according to claim. 1 in which. the. chips; intercepted thereby are. led into, the. substan-.

tially cylindrical hollow body portion in a cur ved path; which. becomes. circular when the. chips have traveled, a

substantial distance into. the cylindrical hollow body pore tion and. whichincludes. means for confining the travel.

of the chips to such circular path, until their speed in. l

References itted in the. file at this. patent UNITED- STATES, PATENTS 1,814,578 Wood ..w July 14, 193i, 2r.lil8g.4.l.0l Lefstedt. May 24, 1938 2.1583249; Olander May 1.6.1939 253112.647 Roesen. et; a1 d. Nov. 28, 19.50. 2,581,220- Tollinson etal. Jan. 1', 195.2: 

